US3270144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dial signal receiving facilities
Assignee: International Standard Electric Corp
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Filing: 1964-12-01
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Granted: 1966-08-30
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Expires: 1984-12-01
Abstract
No abstract record available.
Inventors
- 👤 Vogel Georg
- 👤 Schonemeyer Hilmar
- 👤 Gasser Lorenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:12
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/42; H04Q; H04Q1/00; H04Q1/18; H04Q1/30; H04Q1/44; H04Q1/444; H04Q1/45; H04Q1/453; H04Q1/4535; H04Q1/46; H04Q3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A CIRCUIT ARRANGEMENT USING A DIAL SIGNAL RECEIVING FACILITY FOR RECEIVING VOICE FREQUENCY DIAL SIGNALS ORIGINATING AT SUBSCRIBER STATIONS, CONNECTING LINKS FOR CONNECTING SAID SUBSCRIBER STATIONS TO EXTENDING LINES THROUGH SAID DIAL SIGNAL RECEIVING FACILITY, SAID DIAL SIGNAL RECEIVING FACILITY COMPRISING HYBRID MEANS HAVING A TWO WIRE PRIMARY SIDE AND FIRST AND SECOND SECONDARY SIDES, SWITCHING MEANS RESPONSIVE TO THE INITIATION OF A CALL AT ONE OF SAID SUBSCRIBER SETS FOR COUPLING SAID CONNECTING LINK TO THE TWO WIRE SIDE OF SAID HYBRID, TONE RECEIVER MEANS FOR RECEIVING SAID DIAL SIGNALS CONNECTED TO SAID FIRST SECONDARY SIDE, GATE MEANS CONNECTED TO SAID SECOND SECONDARY SIDE, DIAL TONE GENERATOR MEANS CONNECTED TO SAID GATE MEANS FOR TRANSMITTING DIAL TONE TO THE SUBSCRIBER STATION INITATING A CALL THROUGH SAID HYBRID MEANS RESPONSIVE TO THE OPERATION OF SAID SWITCHING MEANS, AND CONTROL MEANS FOR OPERATING SAID GATE TO BLOCK SAID DIAL TONE RESPONSIVE TO THE RECEIPT OF SAID DIAL SIGNALS.
Claim 2
Dependent Claim
157 words
A CIRCUIT ARRANGEMENT USING A DIAL SIGNAL RECEIVING FACILITY FOR RECEIVING VOICE FREQUENCY DIAL SIGNALS ORIGINATING AT SUBSCRIBER STATIONS, CONNECTING LINKS FOR CONNECTING SAID SUBSCRIBER STATIONS TO EXTENDING LINES THROUGH SAID DIAL SIGNAL RECEIVING FACILITY, SAID DIAL SIGNAL RECEIVING FACILITY COMPRISING HYBRID MEANS HAVING A TWO WIRE PRIMARY SIDE AND FIRST AND SECOND SECONDARY SIDES, SWITCHING MEANS RESPONSIVE TO THE INITIATION OF A CALL AT ONE OF SAID SUBSCRIBER SETS FOR COUPLING SAID CONNECTING LINK TO THE TWO WIRE SIDE OF SAID HYBRID, TONE RECEIVER MEANS FOR RECEIVING SAID DIAL SIGNALS CONNECTED TO SAID FIRST SECONDARY SIDE, GATE MEANS CONNECTED TO SAID SECOND SECONDARY SIDE, DIAL TONE GENERATOR MEANS CONNECTED TO SAID GATE MEANS FOR TRANSMITTING DIAL TONE TO THE SUBSCRIBER STATION INITATING A CALL THROUGH SAID HYBRID MEANS RESPONSIVE TO THE OPERATION OF SAID SWITCHING MEANS, AND CONTROL MEANS FOR OPERATING SAID GATE TO BLOCK SAID DIAL TONE RESPONSIVE TO THE RECEIPT OF SAID DIAL SIGNALS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |